Development and Testing of a Novel Subsea Production System and Control Buoy for the East Spar Field Development, Offshore Western Australia

1996 ◽  
Author(s):  
M.D. Casey ◽  
C.D.F. Lawlor
Keyword(s):  
Western Australia ◽  
Production System ◽  
Field Development ◽  
Subsea Production System ◽  
And Control

On the Subsea Production System Availability with Resident Drones. A Reliability, Availability, Maintenability RAM Analysis

2021 ◽  
Author(s):  
Matteo Mattioli ◽  
Annamaria Di Padova
Keyword(s):  
Production System ◽  
Historical Data ◽  
Economic Value ◽  
Operating Conditions ◽  
System Availability ◽  
Field Development ◽  
Recent Developments ◽  
Subsea Production System ◽  
Reliable Solution

Abstract The challenge in the Oil&Gas industry to remain competitive in a low oil price whilst dealing with minimization of operational risk and uptime asset maximization is leading offshore Companies to evolve thought proactive and predictive maintenance approaches. In the event of unplanned intervention due to anomalies or warning messages at the dispatching center, the decision on the size of the support vessel and its utilization for straordinary maintenance could be time consuming with potential high cost impact, also due to loss of production. Even the new generation of remote condition and monitoring systems, which allow to improve the capability of operators for early warnings and surveillance, provide a reliable solution for emergencies. In this context, resident subsea drones enable on-demand inspection whilst eliminating the need for support vessel and allow operator to manage the risk in continued operations also for dangerous areas restricted to human access. A case study relevant to a new subsea field development have been conducted. Distinctive Reliability, Availability and Maintainability (RAM) analyses have been performed with the aim to get insight on the subsea production system availability considering a resident drone and to demonstrate how the so called "stategic maintainability" can be applied successfully in the decision-making process while reducing the OPEX. The former related to conventional IMR (Inspection, Maintenance & Repair) based on Condition Based and RBI, Risk Based Inspection approach, the latter related to strategic maintenability with resident drones. The application of such analysis required a multi-disciplinary approach together with the possibility of processing historical data in operating conditions. Historical data sources (e.g. OREDA dataset) were collected to obtain failure rates and active repair times typical of subsea equipment. Direct experience gained in over forty years of inspection and maintenance activities together with recent developments on subsea resident robotics allow the understanding of real internvention timing. Results show that resident subsea drones applied for early inspection and light intervention are confirmed timely and costless solution respect to conventional IMR services. They represent the first aid for environmental surveillance and subsea inspection in case of emergency and provide a relevant saving of subsea production un-availability. The economic value emerged from the presented case study represents a step change for OPEX optimization and motivates Best-in-Class Operators to get an insight case-by-case for both green and aging fields.

scholarly journals Development of next generation subsea production system (NextGen SPS) design and analysis for ultra-deepwater applications

2020 ◽  
Vol 37 (3) ◽  
pp. 111-117
Author(s):  
Xing-wei Zhen ◽  
Yue Han ◽  
Qiu-yang Duan ◽  
Jia-hao Wu ◽  
Yi Huang
Keyword(s):  
Optimal Design ◽  
Deep Water ◽  
Production System ◽  
Next Generation ◽  
Field Development ◽  
Subsea Production System ◽  
Offshore Field ◽  
Commercial Performance

The present paper describes a new offshore field development solution, Next Generation Subsea Production System (NextGen SPS), that aims to overcome the technical and commercial limitations of the current offshore field development concepts (dry tree or subsea tree) in ultra-deep water (more than 1500 m). The key developments of the NextGen SPS, including its main characteristics, stability characteristics and optimal design on the riser system, are presented and discussed. The series of studies demonstrates that the NextGen SPS offers improved technical and commercial performance, higher levels of safety, reduced interface complexity and improved development flexibility for field development in ultra-deep water.

scholarly journals Optimization approach for Arctic field development design using subsea production systems

2021 ◽  
Vol 1201 (1) ◽  
pp. 012071
Author(s):  
V V Beskhizhko
Keyword(s):  
Production System ◽  
Production Systems ◽  
Design Method ◽  
3D Models ◽  
General Nature ◽  
Optimization Approach ◽  
Field Development ◽  
Well Location ◽  
Subsea Production System ◽  
Offshore Field

Abstract Russian experience in the design of trunk pipelines and Arctic studies have been used to develop an efficient model and method for Arctic field development design using the subsea production system (SPS). Compared to 2D models used in the past, the new design technique offers an opportunity to make 3D models and can be used for optimization of offshore field development projects. The proposed optimization model is based on the Bellman - Ford algorithm developed for 3D networks. This approach has been used for the first time to capture key features and specific subsea production system design processes. The algorithm and block diagrams developed for the proposed SPS design method is universal. This method can be used to address tasks of a more general nature. Optimization of the particular case between a single start point (well location) and single end point (SPS facility) is implemented as a separate software package, but the scope of applications is not limited by such cases and may be extended even further. It can also be very efficient for Arctic subsea field development.

Enabling Technologies for Low Cost Subsea Field Development

2021 ◽  
Author(s):  
Lucas Cantinelli Sevillano ◽  
Audun Faanes ◽  
Tor Berge Gjersvik ◽  
Sigbjørn Sangesland
Keyword(s):  
Production System ◽  
Communication Systems ◽  
Oil And Gas ◽  
Low Cost ◽  
Ecological Impact ◽  
Oil And Gas Industry ◽  
Ongoing Research ◽  
Field Development ◽  
Technological Developments ◽  
Subsea Production System

Abstract The oil and gas industry faces many challenges as it is committed to provide energy to a world in transition. Declining prices impose constraints to new developments, either greenfield or brownfield. Additionally, the industry’s commitment to long-term value creation with reduced carbon footprint is confronted with the traditional solutions for well construction, production and processing, which consume significant amount of energy with corresponding high CO2 emissions. In this scenario, subsea production and processing technology has been a key enabler for the exploitation of oil and gas resources. This paper presents a holistic review of trends in subsea technology development over recent years which have direct impact on the heart of the subsea production system, namely the subsea tree. The technological developments considered are in different subsea applications such as robotic automation, communication systems, and all-electric systems. The objective of the ongoing research is to perform structural and fundamental analysis of subsea production and injection systems and address the question on how technological developments can be utilized to design an overall better subsea production system so the industry may fully benefit from the economic and ecological impact brought by the joint use of these technologies. Opportunities for reevaluating barrier philosophy to identify technical and economic opportunities for design simplifications of subsea trees that still leave enough pressure barriers in all operational modes are also considered. The analyses presented indicate the current stage of the examined technologies and their potential at reducing both capital and operational cost of subsea systems. These results will be the basis for the future evaluation of improved and new design solutions within the scope of the ongoing project performed by the Norwegian University of Science and Technology and its industrial partners.

Drought stress and osmo-priming effects on physiological and biochemical characteristics of Ocimum basilicum

2016 ◽  
Vol 6 (1) ◽  
pp. 905-913
Author(s):  
Bahram Majd Nassiry ◽  
Neda Mohammadi
Keyword(s):  
Drought Stress ◽  
Total Protein ◽  
Catalase Activity ◽  
Seedling Emergence ◽  
Seed Priming ◽  
Ocimum Basilicum ◽  
Field Development ◽  
Physiological And Biochemical Characteristics ◽  
Germination Characteristics ◽  
And Control

    One of the effects of reducing water content on soil is reduction of growth and development of seedlings and variation of field development. Seed priming technique has been known as a challenge to improve germination and seedling emergence under different environmental stresses. The objectives of this research were to evaluate the effects of osmo-priming on germination characteristics and changes of proline, protein and catalase activity of Ocimum basilicum seeds. Results showed that drought stress reduced the germination characteristics and drought stress in -8 bar was the critical stress.  Priming treatments were include KNO3, PEG and NaCl by 0, -4 and -8 bar concentrations. The seeds were primed with those materials for 8 and 16 hours. The highest germination characteristics were obtained from nitrate potassium in -8 bar for 16 hours priming. Therefore the best seed treatment under drought stress during germination was obtained from the osmo-primed with -8 bar nitrate potassium for 16 hours. The drought stress increased proline and catalase activity but reduced total protein. Priming treatment increases proline, total protein and catalase activity under drought and control conditions. It is concluded that priming results in improvement in germination components of Ocimum basilicum in drought stress conditions and increases the resistance to drought stress with improvement of proline, protein and catalase activity in germination phase.

A new optimization algorithm for the layout design of a subsea production system

2021 ◽  
pp. 109072
Author(s):  
Yi Wang ◽  
Qi Wang ◽  
Aixia Zhang ◽  
Weiwei Qiu ◽  
Menglan Duan ◽  
...  
Keyword(s):  
Optimization Algorithm ◽  
Production System ◽  
Layout Design ◽  
Subsea Production System
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